Gas-engine-starting device.



W. A. HANSEN. GAS ENGINE STARTING DEVICE. uruouzon FILED no. 13, 1910.

1,027,649. Patented May 28, 1912.

2 SHEETS-SHEET 1.

a mu O 4 I W. A. HANSEN.

GAS ENGINE STARTING DEVICE. urmoumir FILED ps0. 13, 1910.

Patented May 28,1912.

2 sums-sum 2.

WTLLIAM A. HANSEN, OF SAN FBANCISCQ GALIFOBNIA.

Specification of Letters Patent.

GAS-ENGINE-STARTING DEVICE.

' Patented May 28,1912.

Application filed December 13, 1910. Serial No. 597,025.

T 0 all whom; it may concern:

Be it known that I, \VILLIAM A. HANSEN, citizen of the United States,residing in the city and county of San Francisco and State ofCalifornia, have invented new and useful Improvements inGas-Engine-Starting Devices, of which the following is a specification.

My invention relates to a device for readily starting gas or internalcombustion engin'es, and for automatically changing the proportion ofair and gas under varying conditions of starting.

It consists in: a combination of parts and details of construction aswill be more fully described and claimed by reference to theaccompanying drawings, in which- Figure 1 is a vertical section of theupper portion of an engine cylinder with valves and other appurtenances.Fig. 2 is an exterior view of a portion of the engine showing thestarting device. Fig. 3 is an en larged section of the auxiliaryvaporizer. Fig. 4 is a view of the charging, scavenging and releasingvalve. Fig.6 is a partial sectional view of the thermostat. Fig. (3 is aplan view of the same. Y I

It is the objectof my invention to provide a means for starting aninternal combustion engine from a stationary condition; to provide asuitably rich mixture for starting the engine under varying temperaturewhich may be present, and after starting, to antomatically increase theproportionate air supply.

A is a carbureter which may be of any suitable or well knowndescription. withthe usual float a. and needle valve, to maintain thedesired gasolene level, and 2 is a small auxiliary vaporizer orcarbureter which is employed in starting, and which may be convenientlyattached to the main carbureter and receive gasolene therefrom through asupply pipe 3, which may be connected with the float chamber of thecarbureter A. By thus connecting these parts, the single float and floatchamber serve to maintain the desired level of gasolene in bothcarburetors.

The flow of gasolene through this part of the apparatus is effected whenthe engine is -to be started by admitting air from a tank,

The force of the air jet passing through the nozzle 5 acts like aninjector to draw the gasolene through the pipe 3, through the passagesexposed by the needle valve 7 and thence through the transverseconnecting passage 8 by reason of the suction caused bythe air jetbefore described. This in sures a rich mixture of gasolene and air,

such as will be readily ignited by the igni- 5 tion means supplied tothe engine. This mixture is supplied directly to the engine cylindersthrough the pipe ('3; and the inanifold 9; thence bv distributing pipes10 to valves 11 through which the mixture may 14, by which they may bemoved simultaneously and the cocks all opened or closed. The plugs havetwo openings with corresponding inlet passage 18 and outlet passage 19,which allow for the circulation of the charge into and through thecylinders. 0

This device also serves as a pressure relief to hllow the eng ne to beturned over easily when opened. When the engine is thus charged, thevalves are closed and the charge being ignited the engine willbest-arted, 5

after which the operation is continued in the usual manner by the chargedrawn through the main carbureter A. When the engine is cold it isnecessary that the starting mixture should be quite rich in order tostart the engine. with the least diflicnlty, but if the en gine has beenrunning and it is desired to start it when heated, it will be necessaryto reduce the richness of the mixture by admitting a greater proportionof air. Thisra is effected by means of a thermostat controlled valve 15.which controls an auxiliary supply of air of the starting device.

The thermostat 16 may be of any suitable or usual construction. consistsof two plates of metal, having different degrees of expansibility; theseplates," being secured together and fixed at one end, the other endcarrying the valve lii which controls the auxiliary air opening 17. pipefrom this opening is shown at 9. and leads to the auxiliary vaporizerinto which it opens, as shown at 9* in Fig. When the engine is to bestarted under these conditions, the auxiliary air which is supplied. is110 controlled by the valve15. lVhen the engine is cold little or no airis drawn through As here shown, it

The

this valve 15, but when the engine is warm the necessary air for makingcombustible starting mixture with the gasolene will be supplied throughthe valve 15, which, as the engine becomes heated, will be more fullyopened, and thus supply the requisite pro portion of air.

As soon as the engine becomes heated, the heat passing through theexhaust manifold will be communicated to the thermostat 16, which isfixed to said manifold, and the operation of the thermostat will be toopen the valve 15 to a greater degree, thus allowing a greater portionof auxiliary air to enter and greatly reducing the richness of themixture.

The pipe 6 has a small opening at its lowest point 6* so that anygasolene which might otherwise accumulat in this pipe may escape.

Having thus described my invention, what I claim and desire to secure byLetters-Patent, is-- 1. In a starting device for gas engines, thecombination of an auxiliary vaporizer, means to supplyvair thereto underpressure to start the engine, and a thermostat acted upon by the varyingheat of the engine, for automatically varying the air supply inproportion to the supply of gasolene.

2. In a starting device for gas engines, an auxiliary vaporizer, meansto supply air thereto under pressure to start the engine, and a means toautomatically increase ,the air supply, said means including athermostat and an auxiliary air inlet controlled thereby,

3. A starting appliance for gas engines, said appliance including anauxiliary vaporizer with a gasolene supply, an air pres sure injector todeliver a mixture to the engine, an auxiliary air inlet connecting withthe vaplorizer, and a thermostat-actuated valve by which the auxiliaryair is regulated. 1

4. In a starting device for gas engines, an auxiliary vaporizer, asupply of air'thereto under pressure, and a means to automaticallregulate the mixture for a cold or hot engine, said means including athermostatactuated valve which closes or 0 us the auxiliary air passageto the vaporizer, said valve being operated by the varying heat of theengine.

5. In a start-ing device for gas engines, an auxiliary ,va-porizer'withan -air nozzle, a transverse passage connecting with the gasolene andauxiliary air supply, and a discharge passage leading to the enginecylinder, and a means connected with the mixture from the vaporizer 'tothe engine cylinders.

7. The combination with an internal combustion engine, and cocks havinga plurality of passages, of a vaporizer using a thermostat acted upon bythe varying heat of the engine to regulate the mixture for a cold orhotengine.

8. The combination with an internal com bustion engine, an auxiliaryva-porizer,-

cocks having a (plurality of passages, and a thermostat acte upon by thevarying heat of the engine to regulate the mixture for starting theengine,

9. The combination with an internal combust-ion engine, an auxiliaryvaporizer, and cocks having a plurality of passages, of a thermostatacted upon by the varying heat of the engine to regulate and form acombustible mixture to start the engine,

said thermostat carrying a valve which opens 0r closes the auxiliary airopening to the vaporizer.

10. In a starting device for gas engines,

.a vaporizer having a means for regulating and forming an explosivemixture, said means including a thermostat acted upon by the varyingheat of the engine, said thermostat carrying a valve, and an auxiliaryair inlet controlled thereby, an air nozzle, a needle valve, a passageconnecting with the gasolene and the auxiliary air opening, and apassage in line with the air nozzle.

11. A starting appliance for gas engines, said appliance including anauxiliary vaorizer with a gosolene supply, an air inector to deliver agaseous mixture to the engine, an auxiliary air inlet connecting withthe vaporizer, means for controlling the flow of air to the auxiliaryinlet, and a valve controlling the gasolene supply. In testimony whereofI have hereunto set my hand in the presence of two subscribingWitnesses.

FGHARLrs EDELM'AN.

